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Circular CT in combination with a helical segment.

Claas Bontus·Peter Koken·Thomas Köhler·Roland Proksa
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Abstract

The combination of circular CT with a helical trajectory segment results in a mathematically complete data set. We present a reconstruction algorithm which is mathematically exact and of the filtered back-projection type. The algorithm ensures that only Radon planes which are not covered along the circle are taken into account, when data from the helical segment are back-projected. Therefore, the helical segment contributes only to low-frequency parts of trans-axial slices. Data along the helix can be obtained with a very low acquisition dose.

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AlgorithmsHumansModels, StatisticalModels, TheoreticalNumerical Analysis, Computer-AssistedPhantoms, ImagingRadiographic Image Interpretation, Computer-AssistedReproducibility of ResultsTomography, Spiral ComputedTomography, X-Ray ComputedJournal Article

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Claas Bontus, Peter Koken, Thomas Köhler, Roland Proksa. 2006-12-12. Circular CT in combination with a helical segment.. https://doi.org/10.1088/0031-9155%2F52%2F1%2F008

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